Window mounted air-conditioning unit



A. H. EBERHART 2,519,085

lumbau! Hmmm un CONDITIONING-UNIT I 2 Sheets-Sheet 1 Aug. l5, 1950 mea1mg.v 24. 1945 WITNESSES:

Aug. l5, 1950 A. H. EBERHART mmow uoumn AIR comarrrvoumc UNIT rma Aug.24, 1945 -2 sheets-sheet 2 INVENTOR ATTORNEY -WITNESSESz n. ag/9 vPatented Aug. 15, 1950 Arthur H. Eberhart, Springfield, Mass., assignorto Westinghouse 'Electric Corporation, East Pittsburgh, Pa., acorporation of Pennsylvania Application August 24, 1945, ASerial No.612,397

Claims.

My invention relates to a window-mounted air conditioning unit and moreparticularly to the mounting means and casing structure of such unit.

One object of the invention is to produce an improved air conditioningunit of the type set forth.

A further object is to produce improved mountlng means and casingstructure for a windowmountedY air conditioning unit.

A still further object is to produce improved mounting means and casingstructure which will be inexpensive, which will have an attractiveexterior appearance, and by means of which access can be had to themechanical or operating parts of the unit without removing the unit fromthe window.

These and other objects are effected by my invention as will be apparentfrom the following description and claims taken in connection with theaccompanying drawings, forming a part of this application, in which:

Fig. 1 is a composite diagrammatic view partly in elevation, of an airconditioning unit mounting means and casing structure embodying myinvention, with the cover shown detached;

Fig. 2 is an enlarged view taken on line II--II of Fig. 1, certain partsbeing omitted; y

Fig. 3 is a fragmentary section on line III-III of Fig. 2 with the covershown applied to the casing;`

Fig. 4 is a view similar to Fig; 3 but taken on line IV--IV of Fig. 2;

' Fig. 5 is a view similar to Fig. 3 but taken on line V-V of Fig. 1;and

Fig. 6 is a Ifragmentary, perspective view showing certain details ofconstruction.

In Fig. l there is shown an air conditioning unit which includes acondenser l0, an evaporator l2. a compressor I4, and a motor I6 fordriving a condenser fan I8 and an evaporator fan 20. The evaporator, thecompressor and the condenser are connected in refrigerant flow relationin the usual manner. The air conditioned by the evaporator is dischargedthrough an opening, not shown, in the upper end 22 of a duct 24 leadingfrom the evaporator. The operating `parts of which extends inwardlyv ofthe window into the room. The casing 28 is secured to the bottom sill 32of a window by any suitable means 34 and encloses the compressor, themotor, the condenser and the condenser fan. The cover 30.

- when in position, encloses the evaporator and evaporator fan.

For the purpose of this specification the parts which project into, orextend or yface in the direction of, the room, or to the right as viewedin Fig. 1, will be described as innery and the parts which project into,or extend or face in the direction of, the outside atmosphere, or theleft as viewed in Fig. 1, `will be referred to as outen According to theinvention, the casing 28 includes a top wall 36, an outer end wall 3land side walls 38. The inner end of the casing is open, and its bottomside may be partly or wholly closed or may be entirely open. The outerend of the casing is provided with one or more openings, not shown, foradmitting and discharging outside air used for cooling the condenser.Provision is also made for admitting outside air to be conditioned anddischarged into the room and for exhausting room air to the outsideatmosphere. Since it forms no part of the invention, this part of thestructure is also not shown nor described.

The casing is provided with means for supporting ller pieces for closingthe spaces between the vertical side walls of the casing and the sidejambs of the window and for detachably, but tightly, engaging the outerend of the cover.v As shown, the inner end of the casing is providedwith an upper angle member 40 which includes a horizontal wall 42 whichabuts the top wall of the casing, and a vertical wall 44 which extendsupwardly from the top of the casing. As best shown in Figs. 1 and 4, thewall 42 is secured along its outer marginal portion to the top wall ofthe casing and the inner marginal portion of the wall 42 is leftunsecured for a purpose which will hereinafter appear. vThe outer edgeof the wall 4'2 may be bent up as at 45 so that the angle member 40constitutes a modified form of channel against which the lower edge of,a window sash 46 is adapted to abut'as shown in Fig. 1. If desired, acompressible gasket, not shown, may be interposed between the wall 42 ofthe angle member 4i! and the bottom edge of the window sash to insure anairtight joint therebetween.

The inner end of the casing is also provided with vertically disposedangle members 41 which are carried by the opposite side Walls 38 of the3 casing, as best shown in Figs. 1, 2 and 3. T he angle members 41include walls 48 which abut the side walls of the casing and walls 50which are disposed at an angle to said side walls. As will be seen fromFig. 3, the walls 48, like the wall 42 and for the same purpose, aresecured only along their outer marginal portions to the side walls ofthe casing. The walls 50 carry, or abut against, filler pieces 5I forclosing the spaces between the vertical sides of the casing and the sidejambs of the window.

The casing 28 is still further provided with means for slidablysupporting the tray 26 which supports the assembled operating parts ofthe air conditioning unit. As illustrated, angle members 52 are providedwhich include vertical walls 54, secured to the inner faces of the lowermarginal portions of the side walls of the casing, and horizontallydisposed walls 56 which constitute tracks on which the tray 26 isadapted to slide. The angle members 52 extend lengthwise of the casingto an extent su'icient to provide adequate support for the tray 26 andthey also extend into the room beyond the inner end of the casing so asto provide a support for the cover 30. As will be seen from Figs. 3 and4, inner marginal portions of the walls of the casing are oiset or bentinwardly from the unattached inner marginal portions of the walls 42 and48 of the angle members 40 and 41, as at 60, so as to provide a space 62which will be hereinafter referred to.

The cover 30 is provided with a top wall 66, an inner vertical wall 68and side walls 16, and is open at its bottom and at its outer orleft-hand end as viewed in Fig. 1. The top wall of the cover is providedwith a conditioned air discharge opening, not shown, which, when thecover is in position, registers with the opening in the end 22 of theduct 24.

The cover 30 is movably supported on the portions of the angle members52 which extend into the room from the inner end of the casing 28. Inthe preferred embodiment, as best illustrated :in Figs. 1 and 5,elongated plates 12 are secured to the inner faces of the lower portionsof the opposite side walls of the cover and are provided with pendantoffset marginal portions 14 which, with the adjacent portions of theside walls 10 dene spaces 16 for receiving the vertical walls 54 of theangle members 52. The cover 30 is thus slidably supported by theinwardly-extending portions of the angle members 52 with the pendantportions of the plates 14 engaging the inner, and the correspondingportions of the side walls 10 of the cover engaging the outer, sides ofthe vertical walls 54 of the angle members.

Operation In mounting an air conditioning unit embody ing my inventionon the sill of a window, the casing 28 is first suitably secured to thewindow sill as at 34, and the tray 26, supporting the operating parts ofthe air conditioning unit, is then slid into the casing. In itsmovement, into or out of the casing, the tray 26 rides on the horizontalwalls 5S and is guided by the vertical walls 54 of the angle members 52.When the tray is in position, but before the cover 30 is applied, theparts will appear as shown in the left-hand portion of Fig. 1. The coveris next presented to the room' end of the casing in such a manner as tocause the vertical walls 54 of the angle members 52 to enter the spaces16 between the offset portions of the side walls 10 of the cover asshown in Fig. 5. The cover is then moved towards the casing, or to theleft as viewed in Fig. 1, until the marginal portions of the top andside walls thereof enter the space 62 between the inner marginalportions of the top and side walls of the casing and the adjacentmarginal portions of the walls 42 and 48 of the top and side anglemembers 40 and 41, respectively. This is clearly shown in Figs. 3 and 4.Due to the fact that the lower marginal portions of the side wallsv ofthe cover slide against the outer faces of the vertical walls 54 of theangle members, the lower corners of the side Walls of the casing are cutout, as shown at 18 in Figs. 1 and 6, so as to accommodate thecorresponding lower corner portions of the side walls 100i the cover.

When it is desired to have access to the evaporator, the evaporator fan,and the proximal side of the motor and compressor, it is merelynecessary to retract the cover inwardly, or to the right as viewed inFig. 1, to the desired extent or, if necessary, until it ridescompletely oil the angle members 52. If it is desired to have access tothe condenser, the condenser fan, or the distal portions of the motorand compressor, the tray 26 is withdrawn inwardly, or to the right asviewed in Fig. 1, until the parts referred to are accessible. Byretracting the tray 26 inwardly until it clears the inner ends of theangle members 52, the operating parts of the air conditioning unit maybe removed from the casing as a unit.

As will be seen from Fig. 2, the top and side walls of the casing arecurved, thus leaving spaces which are suitably closed by filler pieces,not shown, or by means of some plastic material which can be readilyapplied. If desired, the casing may be made square or of any desiredshape.

As shown in Figs. 3 and 4, the spaces 62 are sufficiently deep, and theengagement of the walls of the cover' with the walls defining thesespaces is suiciently tight, so as to produce a relatively airtight jointand so as to prevent rattling of the cover due to operationalvibrations. Also, by inserting the marginal portions of the cover intothe spaces 62, the junction of the cover with the casing is renderedless conspicuous, thus improving the appearance of the casing.

While I have shown my invention in but one form, it will be obvious tothose skilled in the art that it is not so limited, but is susceptibleof various changes and modifications without departing from the spiritthereof.

What I claim is:

1. Mounting means for. a window-mounted air conditioning unit, saidmeans comprising a casing having a top wall and side walls and adaptedto be mounted in a window structure, the room end of said casing beingopen, angle members having vertical walls secured to the inner sides ofthe lower marginal portions of the side walls of the casing andinwardly-extending horizontal walls adapted to slidably support a traycarrying the assembled operating parts of the unit, said angle membersextending inwardly into the room from the room end of the casing, acover for closing the room end of said casing, said cover having a topwall, an end wall, and side walls, and means carried by the inner sidesof the lower marginal portions of the side walls of the cover forslidably engaging the vertical walls of said angle members, saidlast-mentioned means and lower marginal portions being disposed on theinner and outer sides, respectively, of said vertical walls, wherebysaid cover may be supported by, and

moved on, said angle members towards or awavl from the open end of thecasing.

2. 'Mounting means for a window-mounted air conditioning unit comprisinga casing'adapted to be secured Vto the lower sill of a window,'saidcasing including a top wall and side walls, the room end of theucasingbeing open, angle members having vertical walls secured to the innersides of the lower marginal portions of the side walls of the casing andinwardly-extending horizontal walls adapted to slidably support a trayon which the operating parts of the unit are assembled ,lthe bottom sideof said casing being closed bysaid tray when the latter is` in position,said angle members extending inwardly into the room'beyondthe room endof the casing, a cover for .closing the room end of said casing, saidcover including side walls and a top wall, and means carried by theinner sides of the lower marginal portions of the side walls of thecover for slidably engaging the vertical walls of said anglemembers,lsaid last-mentioned means and lower marginal portions beingdisposed on the inner and outer sides, respectively, of said verticalwalls. whereby said cover may be supported by. and moved on, said anglemembers towards or away from the-open end of the casing.

3. Mounting means for a window-mounted room conditioning unit, saidmeans comprising a casing 28 adapted to be mounted on the lower sill 32of a window, said casing including sidel walls 38 and a top wall 36 andhaving its room end open, a cover 30 for closing the room end of thecasing, said cover including side walls 'Il andf'a top wall 66, anglemembers 40 and l1 having-walls 42 and 48 secured to the exterior of thetop-and side walls of the casing adjacent and along the marginalportions at the room` end thereof, said marginal portions being spacedfrom the marginal portions of said angle member walls I2 and Il toprovide spaces 62 opening toward the room end for receiving the marginalportions of thetop and side walls 66 and 10 of the cover 30, the other'walls of said angle members projecting from said casing and adapted toserve for 45 2,081,109l

attaching the casing to the window.

4. Mounting means for a window-mounted air conditioning unit, said meanscomprising a case ing adapted to be mounted on the lower silhof a,

window and extending outwardly of the window 50.

,into the outside atmosphere, said casing including side walls and a topwall and having its room end open, angle members having walls securedalong outer marginal portions thereof to the top and side walls of thecasing near the room end of said casing, a cover for closing the openroom end of the casing, said cover including a top wall and side wall,the marginal portions of the top and side walls ofthe casing beingoffset inwardly from the adjacent inner marginal portions of said anglemember walls to provide spaces therebetween for 'receiving the marginalportions of the top and side walls of the cover, the other walls of theangle members projecting from the casing at the 'inner .edges of therst-mentioned angle member walls.

5. The structure recited in claim 3 together with the angle memberscarried by said casing and extending into said casing and from the roomend of the casing inwardly into the room, said members includingvertical walls secured to the inner sides of the lower marginal portionsof the side walls of the casing and horizontally disposed walls adaptedto slidably support a tray on which the operating parts of the airconditioning unit are assembled, and means carried by the inner lowermarginal portions of the side walls of said cover for slidably engagingsaid vertical walls and movably supporting said cover on said anglemembers, said last-mentioned means and lower marginal portions beingdisposed on the inner and outer sides, respectively, of said verticalwalls.

ARTHUR H. EBERHART.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Name Date 99,764 Deering Feb. 1,5, 1870893,648 Peters July 21, 1908 953,803- Sellers Apr. 5, 1910 Kilb May 18,1937 2,115,720 Holmes May 3, 1938 2,186,316 i Balster Jan. 9, 19402,296,635 Foehrenback Sept. 22, 1942 2,335,627 Wolfert Nov. 30, 1943

